ELSNER 30175 Sewi TH Modbus Modbus Temperature and Humidity Sensor

<p/the ELSNER 30175 product, called Sewi TH Modbus, is a temperature and humidity sensor designed for precise indoor measurements.

Key Features

This sensor is ideal for commercial and residential applications, offering a number of key capabilities:

• Temperature measurement: the sensor can measure the temperature in the range from 0 to +50°C and from -5 to +60°C.
• Humidity measurement: The measurement of relative humidity (rH) is possible in the range from 0 to 90% and from 0 to 100%.
• Dew point calculation: The sensor automatically calculates the dew point based on temperature and humidity measurements.

Technical Specifications

Here are the detailed technical specifications of the product:

• Casing: the sensor has a plastic enclosure with dimensions of 105mm x 32mm and a weight of about 75 g.
• Color: The sensor color is similar to RAL 9003/RAL 9002 (white).
• Degree of protection: IP30.
• Ambient temperature: it works between 0 and +45°C and can be stored between -20 and +70°C.
• Ambient humidity (rH): operates at up to 95% of non-condensing relative humidity.
• Overvoltage category: III.
• Degree of pollution: 2.

Food and Communication

The sensor is powered by a voltage of 24V DC SELV ± 10% and has a current consumption of less than 15mA.

• Modbus interface: RS485 (SELV) with RTU protocol.
• RS485 bus load: 1/8 unit load according to the RS485 standard.
• RS485 driver performance: min. 2.4 V at 54 Ohms of bus load (corresponding to 32 standard RS485 loads).
• Power and Modbus connector: push-in spring terminal with a conductor diameter of 0.4 to 0.8 mm and a stripping length of 6.5 mm.

Installation

The sensor is designed to be mounted on a wall or ceiling, offering a versatile solution for a variety of applications.